摘要
针对大失准角情况下的舰载机捷联惯导系统传递对准问题,建立了非线性的经典传递对准和快速传递对准误差模型。从二者对失准角的定义出发,通过理论推导,论证了非线性情况下两种误差模型的一致性关系。采用“速度+姿态”组合匹配算法,对大失准角情况下舰载机捷联惯导系统的传递对准进行了仿真实验。仿真实验中,经典传递对准方法对水平失准角的估计误差均在1′左右,对方位失准角的估计误差均在1′左右;快速传递对准方法对对水平失准角的估计误差均在1′左右,对方位失准角的估计误差均在2′左右。结果表明,两种方法均能对失准角进行有效估计且精度接近,两种误差模型在非线性情况下具有一致性。
Aiming at the problem of transfer alignment of the strapdown inertial navigation system ( SINS) with large misalignment angle, the nonlinear classical transfer alignment and fast transfer alignment error models are established. Based on the definition of misalignment angle, the consistency relation between the two error models under nonlinear condition is proved theoretically. The velocity + attitudeM combined matching algorithm is adopted to simulate the transfer alignment of the strapdown inertial navigation system of shipbome aircraft under the condition of large misalignment angle. In the simulation experiment, the estimation error of the classical transfer alignment method for the horizontal misalignment angle is about 1′, for the position misalignment angle is about 3′. The estimation error of the fast transfer alignment method for the horizontal misalignment angle is about 1′, for the position misalignment angle is about 2′ The results show that the two methods can effectively estimate the misalignment angle and the accuracy is close to each other, the two error models are consistent in nonlinear case.
作者
黄国荣
魏翔
郝顺义
卢航
许明琪
Huang Guorong;Wei Xiang;Hao Shunyi;Lu Hang;Xu Mingqi(Aeronautics Engineering College,Air Force Engineering University,Xi'an 710038,China)
出处
《电子测量与仪器学报》
CSCD
北大核心
2019年第9期1-8,共8页
Journal of Electronic Measurement and Instrumentation
基金
国家自然科学基金面上项目(61573373)
陕西省自然科学基金(2017JQ6034)资助项目
关键词
捷联惯导系统
传递对准
大失准角
非线性误差模型
一致性
strapdown inertial navigation system
transfer alignment
large azimuth misalignment
nonlinear error model
consistency
